Sorry for the delay and thank you for your patience. My name is Michael. I will be helping you with your question today. Your question is in the TV category. If you feel this is not the best category for your question, let me know and I will forward it to the appropriate group of Experts.

Please let me know if there as any additional information that you think might be pertinent to your question. If I don't hear back from you, I'll provide the best answer I can based on the information you've given so far. You will still be able to reply with additional information or questions at any point during our conversation, and I'll revise the my answer accordingly.

The most common cause of this is bad or failing capacitors on the power board or another major board. The power board is the most common for this symptom. The first thing I would do is a visual inspection of the power supply and.look for buldging or leaking capacitors, even if only slightly. If you find any, replace them. In fact, while you are there you can replace them all. There will only be a handful on the power board. Just use caps that have the same.capacitance rating or slightly higher. Let me know what you find out there and we can proceed.

I would appreciate a moment of your time to rate my level of service at your convenience. It will not affect our ability to communicate and it will keep the question from going back into the open question pool.

The next thing to do would be to measure the VS and VA voltages from the power supply. Ideally you can do this when it is working and when it stops working. If you find that the power is drawing down to 0, you can disconnect a single board and do the same test. if you have a board disconnected and it stops the voltage from dropping, then you have your culprit.